EIP-2026-116908

PRE-CVE

Blizzard Update Agent - JSON RPC DNS Rebinding

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-116908. PoCs published by Google Security Research.

AI-analyzed exploit summary This exploit leverages DNS rebinding to bypass authentication in Blizzard Update Agent's JSON RPC server, allowing any website to send privileged commands to the agent running on localhost port 1120. The attack involves alternating DNS resolutions to bypass same-origin policy and execute commands such as installing or downloading files.

Description

Blizzard Update Agent - JSON RPC DNS Rebinding

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · textlocalwindows
https://www.exploit-db.com/exploits/43879

This exploit leverages DNS rebinding to bypass authentication in Blizzard Update Agent's JSON RPC server, allowing any website to send privileged commands to the agent running on localhost port 1120. The attack involves alternating DNS resolutions to bypass same-origin policy and execute commands such as installing or downloading files.

Classification
Working Poc 90%
Attack Type
Auth Bypass
Complexity
Moderate
Reliability
Reliable
Target: Blizzard Update Agent (version 2.13.4.5955)
No auth needed
Prerequisites: Victim must have Blizzard Update Agent installed · Victim must visit a malicious website · DNS rebinding setup (e.g., rbndr.us)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026